2403403 has 2 divisors, whose sum is σ = 2403404. Its totient is φ = 2403402.

The previous prime is 2403389. The next prime is 2403407. The reversal of 2403403 is 3043042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2403403 - 2⁵ = 2403371 is a prime.

It is not a weakly prime, because it can be changed into another prime (2403407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201701 + 1201702.

It is an arithmetic number, because the mean of its divisors is an integer number (1201702).

2^2403403 is an apocalyptic number.

2403403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2403403 is an equidigital number, since it uses as much as digits as its factorization.

2403403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 2403403 is about 1550.2912629567. The cubic root of 2403403 is about 133.9498401405.

Adding to 2403403 its reverse (3043042), we get a palindrome (5446445).

The spelling of 2403403 in words is "two million, four hundred three thousand, four hundred three".